cscg24-guacamole

CSCG 2024 Challenge 'Guacamole Mashup'
git clone https://git.sinitax.com/sinitax/cscg24-guacamole
Log | Files | Refs | sfeed.txt

dot_cursor.c (2543B)

      1/*
      2 * Licensed to the Apache Software Foundation (ASF) under one
      3 * or more contributor license agreements.  See the NOTICE file
      4 * distributed with this work for additional information
      5 * regarding copyright ownership.  The ASF licenses this file
      6 * to you under the Apache License, Version 2.0 (the
      7 * "License"); you may not use this file except in compliance
      8 * with the License.  You may obtain a copy of the License at
      9 *
     10 *   http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing,
     13 * software distributed under the License is distributed on an
     14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     15 * KIND, either express or implied.  See the License for the
     16 * specific language governing permissions and limitations
     17 * under the License.
     18 */
     19
     20#include "config.h"
     21
     22#include <cairo/cairo.h>
     23#include <guacamole/client.h>
     24#include <guacamole/layer.h>
     25#include <guacamole/protocol.h>
     26#include <guacamole/socket.h>
     27#include <guacamole/user.h>
     28
     29/* Macros for prettying up the embedded image. */
     30#define X 0x00,0x00,0x00,0xFF
     31#define O 0xFF,0xFF,0xFF,0xFF
     32#define _ 0x00,0x00,0x00,0x00
     33
     34/* Dimensions */
     35const int guac_common_dot_cursor_width  = 5;
     36const int guac_common_dot_cursor_height = 5;
     37
     38/* Format */
     39const cairo_format_t guac_common_dot_cursor_format = CAIRO_FORMAT_ARGB32;
     40const int guac_common_dot_cursor_stride = 20;
     41
     42/* Embedded pointer graphic */
     43unsigned char guac_common_dot_cursor[] = {
     44
     45        _,O,O,O,_,
     46        O,X,X,X,O,
     47        O,X,X,X,O,
     48        O,X,X,X,O,
     49        _,O,O,O,_
     50
     51};
     52
     53void guac_common_set_dot_cursor(guac_user* user) {
     54
     55    guac_client* client = user->client;
     56    guac_socket* socket = user->socket;
     57
     58    /* Draw to buffer */
     59    guac_layer* cursor = guac_client_alloc_buffer(client);
     60
     61    cairo_surface_t* graphic = cairo_image_surface_create_for_data(
     62            guac_common_dot_cursor,
     63            guac_common_dot_cursor_format,
     64            guac_common_dot_cursor_width,
     65            guac_common_dot_cursor_height,
     66            guac_common_dot_cursor_stride);
     67
     68    guac_user_stream_png(user, socket, GUAC_COMP_SRC, cursor,
     69            0, 0, graphic);
     70    cairo_surface_destroy(graphic);
     71
     72    /* Set cursor */
     73    guac_protocol_send_cursor(socket, 2, 2, cursor,
     74            0, 0,
     75            guac_common_dot_cursor_width,
     76            guac_common_dot_cursor_height);
     77
     78    /* Free buffer */
     79    guac_client_free_buffer(client, cursor);
     80
     81    guac_client_log(client, GUAC_LOG_DEBUG,
     82            "Client cursor image set to generic built-in dot.");
     83
     84}
     85